Plugin org.apache.maven.plugins:maven-resources-plugin:2.6

创建maven project时工程报错
Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to nexus (http://localhost:8080/nexus-2.7.0-06/content/groups/public/): Connect to localhost:8080 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused: connect -> [Help 1]

方法一：网上有很多人说以下方法可行

1.打开maven根目录里的config并打开settings.xml找到本地仓库位置即<localRepository>F:/taotao/repository</localRepository>

2.打开F:\taotao\repository\org\apache\maven\plugins清空里面的plugins

3.右键maven工程->run as->maven install

方法二：

1.打开maven根目录里的config并打开settings.xml添加

<mirror>   
            <id>Central</id>   
            <url>http://repo1.maven.org/maven2</url>   
            <mirrorOf>central</mirrorOf>   
        </mirror>

2.打开F:\taotao\repository\org\apache\maven\plugins清空里面的plugins

3.右键maven工程->run as->maven install，此时将会下载大部分plugins，但是又出现了以下问题
Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.2:war (default-war) on project itcast-usemanage: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]

4-1.项目中有web.xml，则在pom.xml的<build>节点上加上maven-war-plugin配置

<plugins>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.0.0</version>
        <configuration>
            <webResources>
                <resource>
                    <directory>WebContent</directory>
                </resource>
            </webResources>
        </configuration>
    </plugin>
</plugins> 

4-2.项目中有web.xml，则在pom.xml的<build>节点上加上maven-war-plugin配置

<plugins> 

    <plugin> 

        <groupId>org.apache.maven.plugins</groupId> 

        <artifactId>maven-war-plugin</artifactId> 

        <version>3.0.0</version> 

        <configuration> 

            <failOnMissingWebXml>false</failOnMissingWebXml> 

        </configuration> 

    </plugin> 

</plugins> 

5.右键maven工程->run as->maven install，成功解决问题

方法三：

1.windows->preferences->maven->lifecycle mapping找到里面的mapping file location

地址为：D:/itcast-workspace/.metadata/.plugins/org.eclipse.m2e.core/lifecycle-mapping-metadata.xml

当我们打开的时候发现招不到这个路径

2.打开eclipses的根目录打开plugins找到名为org.eclipse.m2e.lifecyclemapping.defaults_1.5.0.20140606-0033.jar的包

3.解压步骤2中的jar包至步骤1中的mapping file location并打开lifecycle-mapping-metadata.xml

4.如缺少maven-compiler-plugin就添加其配置
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <versionRange>[2.5.1,)</versionRange>
        <goals>
          <goal>testCompile</goal>
          <goal>compile</goal>
        </goals>
      </pluginExecutionFilter>
      <action>
        <ignore/>
      </action>
    </pluginExecution>

5.windows->preferences->maven中将update maven projects on startup勾上

6.右键项目->maven->update projects